Punching-machine.



M. J. RIGGS. PUNGHING MACHINE.

APPLICATION FILED FEB. 10, 1908.

899,324; I Patented Sept. 22, 1908.

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899,324, Patented Sept. 22, 1908.

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UNITED, STATES PAEJEN orsron MORRIS J. RIGGS, OF TOLEDO, OHIO, ass enoar AMERICAN BRIDGE coMPnNY, or PITTS- BURG, PENNSYLVANIALA ooaroaa'rrou or NEW mass-r;

. PUNGHING MAGHINE.

, specificationof Letters Patent.

- Patented Sept. 22, 1908.

Application filed. February 10, 1908. SerialNo. 416,023.:

1 To all whom it may concern:

Be it known that 1, IVIORRIS J'. RIGGs, or

speclfication, in which-- the plate to be punche located at one side or at one end of the plate- Figure 1 is'an end elevation, partly in section, of a punching machine embodyin my invention; and Figs. 2, '3 and 4 are detall views showing the clutch-actuating mechanism. I

My inventionhas relation to unching machines of the general class escribed and claimed in the patent to VVeatherson, No.- 823,148, dated June 12th, 1906. -In machinesof this class, a support is provided for universally movable in a single p ane. There is also provided a templet or pattern plate to be punched, together with centerin means consisting preferably of a-pin carried by a lever and adapted to enter perforations in the pattern late or templet, the arrangement being suc that when the in is entered in any particular perforation oi the templet, and the unch is operated, a hole is punched in the p ate in thecorrect position;

The present invention is designed to provide improved means in connection with the operating lever of the centering pin, for controlling the operation of the punch.

The precise nature of my invention will be best understood by reference to the accomone em odiment thereof, and which will now be described, it being premised, however,'

that various changes may be made in the details of construction and arrangement by those skilled in the art without departing from the spirit and scope of my invention asdefined in the appended claims.

In these drawings, the numeral 2 designates the frame of the punching machine having an overhanging arm 3 in which the gaginga drivin pinion 8 on a. driving shaft 9. T 1

0 gear w eel 6 is-loos'ely mounted on the shaft and has'a clutch hub 10 which is adapted to engage a sliding clutch member said su port being 11 fixedly connected to the shaft to rotate therewith under. the action of a spring 12.

- 13 designates the universally movable tableor su port for the plate to be punched, and whic may be mounted upon the two sets of track wheels 14 and 15 in the manner shown and describedin the Weatherson patent or in any other suitable manner.

16 designates the centering pin, which is adapted to enter the perforations in the pattern plate or templet. This in is loosely connected at its-up er end to a and lever 17,

which is fulcrume at 18 in a liIik-19carriedby asupporting arm or bracket 20 fastened to the frame member which supports the moving table 13, f 21 is a sprin which is interposed between the lever and t e bracket or support 20, for the purpose-of normally holding the lever in its elevated position with-the pin 16 withdrawn from the pattern plate or templet'.

Pivoted on the lever 17 is a small finger 1ever 22 having an -upwardl extending arm 23 carrying an insulated e ectric contact. 24, which, when the finger arm of the lever is pressed upwardly toward themain lever 17, is adapted to be engaged with a coacting contact 25 carried by an arm 26 supported by the lever 17. The engagement of these contacts 24 and 25 closes an electric circuit 27,

which includes the coils of the electro-magnets 28. 1

29 is an armature, which is carried by the short arm of a bell crank lever 30,-who selonger and upwardly vextending arm is connected by link 31 with a pin or plunger 32 whose free end engages a cam surface 33 on the clutch member'll before referred to.

34 is all-adjustable counterweight for the lever 30, and 35 is a spring which 1s arranged to be compressed by the movement of the lever 30 when the armature 29 is attracted by the magnets.

The operation is as follows :The oper-v ator depresses the lever 17 to enter the pin 16 in one of the holes or perforations in the templet; and when the pm is so entered, presses the lever 22 and thereby closes the electric circuit 27 which energizes the magnets 28. The ener ized magnets attract the armature 29, thereby actuating the lever 30 and with drawing the in or plunger 32 from itsengagement with the cam surface 33 of the clutch member 11. This en agement of the pin or plunger has been holdmgthe clutch members 10 and 11 out of contact with each other, as clearly shown in Fig. 2. As soon as the pin or plunger 32 has withdrawn, the spring 12 throws the clutches into engagement, and the punching tool is actuated. When the lever 22 is released by the operator the pin or plunger 32 is thrown into engagement with the cam surface 33 b weight 34 and by the impulse of the spring 35, the latter being for the purpose of glving a quick initial impulse. The rotation of the cam surface 33 of the clutch member 11 against the end of the in or plunger 32 retracts the clutch memlier 11 from enga ement with the clutch hub 10 and the too is rendered inoperative.

The device described forms an extremely simple and efiective means for enabling the of the unchingtool by'a'clutchsuch as describe it'being'obvious that the magnets may control any form of startin and stopping device for the tool. It is a so obvious that the magnets and connections operated thereby for co'ntrollin the clutch can be changed in their mec anical construction and arrangement without departing from my invention.

I claim 1. In a machine of the character described, the combination of a movable templet and work support, an index pin arranged to cooperate with the. templet, a tool arranged to act on the work, a device for throwing the tool into and out of operation, lever means for actuating the index pin, and a su plemental lever device mounted on said ever for controlling the operation of the tool-controlling device; substantially as described.

2. In a machine of the character described,- the combination of a movable templet and work support, an index'pin arranged to 'cooperate with the templet, a lever for actu-.

the action of the counter-- ating said 'pin, a tool arranged to act on the work, a device for throwing the tool into and out of operation, a magnet for controlling said device, and means carried by the index operating lever for controlling the circuit of the magnet; substantially as described.

3. In a machine of the character described, the combination of a movable templet and work su port, a lever, an index pin carried by said ever and arranged to cooperate with the templet a tool for acting on the work, a device for eilecting the starting and stopping of the tool, a magnet for controlling said device, contacts carried by the said lever for controlling the circuit of the magnet, and means for opening and closing said contacts; substantially as. described.-:

4. In a machine of the character described,

controlling theaction of the too1-controlling device, and a spring arranged to act upon the said lever in opposition to the magnet; substantially as described.

5. In a machineof'the character described, a tool actuating mechanism, including clutch members, one of'said members being fixed to the tool-actuating shaft with res ect to rotary movement, but having a sli ing'movement on said shaft, a spring for throwing said clutch in one direction, a pin or plunger normallyheld in engagement. with a. cam surface on the movable clutch member, an

electro-magnet for retracting said pin from engagement with the cam surface,' and a spring arranged to be'compressed by retract1on of the pin; substantially as described.

In testimony whereof, I have hereunto set my hand.

-MORRIS J. RIGGS. Witnesses:

ERNEST E. THAYER, S. G. BROWN. 

